Early on in her career, Perry dated actor Johnny Lewis from 2004-2005.
The pair split in 2006; Lewis was best known for his role on Sons of Anarchy and passed away in 2012.
Perry dated Gym Class Heroes singer Travis McCoy beginning in 2006.
Perry appeared as the love interest in the band's music video for the song "Cupid's Chokehold."
The pair split in December 2008 after two years of dating.
Perry met comedian Russell Brand in mid-2009 when she filmed a cameo for his film Get Him to the Greek.
The two became engaged on New Year's Eve 2009 during a holiday in India, and married on October 23, 2010.
On December 30, 2011, Brand filed for divorce, citing irreconcilable differences.
Katy Perry started dating singer John Mayer in 2012.
The pair made many high profile appearances together, including the Grammy Awards.
Mayer and Perry split in 2015 after nearly three years together.
After splitting with Mayer, Perry had a quick romance with DJ Diplo.
Perry was first spotting flirting with Orlando Bloom at a 2016 Golden Globe Party.
The actor and musician were spotted heading on vacation together, including one infamous naked paddle-boarding picture.
Bloom and Perry split early in 2017, after attending the Vanity Fair Oscars Party in February of this year.